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PM Update: Showers possible overnight, and again on Tuesday


Radar & lightning: Latest regional radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Lots of clouds helped keep temperatures on the mild side today, but humidity was high enough you may not have found it the most enjoyable during voyages outdoors. A small storm system passing to the south of the area tonight and tomorrow will try to send us some showers, but the heaviest of the rain wants to stay to our south.

Through Tonight: Clouds remain numerous during the evening and into the night, with breaks rather limited. Low pressure passing to the south just scrapes us, mainly missing the area with its heaviest rain. A few showers may make it in during the evening and then through the night. Favored spots are likely to the south of D.C. (50%-60% chance), but some showers are possible everywhere (30%-40% chance). Lows make the mid-60s to near 70.

Tomorrow (Tuesday): The system pushes offshore, but a wind off the ocean and plentiful low level moisture ensures we may not have a totally dry day. Some morning showers are possible, as is patchy fog or drizzle. And a few more showers may pop up late in the day as well (30% chance). Still, we should have a lot more non-rain time than rain time overall, and at least periods of partial sunshine. Highs reach the low-to-mid 80s.

See Jason Samenow’s forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.

Pollen: Weed pollen is moderate/high. Grass and mold spores are both low/moderate. Tree pollen is low.


“Urban Sunflower” on August 16 in D.C. (Ellen O via Flickr)

Fried birds: The Weather Channel reports that thousands of birds have been killed at the Ivanpah Solar Electric Generating System in southern California. The solar plant works by sun rays being redirected from mirrors to water boilers on top of towers. The “solar flux” caused by directed light can heat the air to about 800 degrees, causing feathers to be singed in flight, either sending birds free-falling to death or creating life-challenging problems for the survivors.

Ian Livingston is a forecaster/photographer and information lead for the Capital Weather Gang. By day, Ian is a defense and national security researcher at a D.C. think tank.
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At a Glance

Wed.

partlycloudyday
30° /40°

Thu.

sunny_clear
22° /30°

Fri.

partlycloudyday
19° /34°

Sat.

partlycloudyday
21° /25°

Sun.

sunny_clear
/24°

Mon.

snow
17° /37°
Drop 30%
National Airport
Dulles
BWI

Right Now

Washington, D.C., Snow Tracker

Current Snow Total
18.8"
Record Most Snow
(2009-10)
56.1"
Record Least Snow
(1997-98, 1972-73)
0.1"
Last Winter's Snow Total
18.3"

D.C. Area Almanac

 
National
Dulles
BWI
Avg. High
 
Avg. Low
 
Rec. High
 
Rec. Low
 
Sunrise
 
Sunset
°F
 
 
°C

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